From b095157c1d9ffd979a82f559aa488e35c2e7f392 Mon Sep 17 00:00:00 2001
From: Luis Malheiro <lmalheiro@users.noreply.github.com>
Date: Sat, 25 Sep 2021 10:30:31 -0300
Subject: perf(ext/fetch): Use the WebIDL conversion to DOMString rather than
 USVString for Response constructor (#12201)

---
 cli/bench/main.rs                          |  5 +++++
 cli/tests/testdata/response_string_perf.js | 34 ++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 cli/tests/testdata/response_string_perf.js

(limited to 'cli')

diff --git a/cli/bench/main.rs b/cli/bench/main.rs
index 06e2d59bb..8078259d9 100644
--- a/cli/bench/main.rs
+++ b/cli/bench/main.rs
@@ -111,6 +111,11 @@ const EXEC_TIME_BENCHMARKS: &[(&str, &[&str], Option<i32>)] = &[
     &["run", "cli/tests/testdata/text_encoder_into_perf.js"],
     None,
   ),
+  (
+    "response_string",
+    &["run", "cli/tests/testdata/response_string_perf.js"],
+    None,
+  ),
   (
     "check",
     &[
diff --git a/cli/tests/testdata/response_string_perf.js b/cli/tests/testdata/response_string_perf.js
new file mode 100644
index 000000000..f55376c77
--- /dev/null
+++ b/cli/tests/testdata/response_string_perf.js
@@ -0,0 +1,34 @@
+const mixed = "@Ā๐😀";
+
+function generateRandom(bytes) {
+  let result = "";
+  let i = 0;
+  while (i < bytes) {
+    const toAdd = Math.floor(Math.random() * Math.min(4, bytes - i));
+    switch (toAdd) {
+      case 0:
+        result += mixed[0];
+        i++;
+        break;
+      case 1:
+        result += mixed[1];
+        i++;
+        break;
+      case 2:
+        result += mixed[2];
+        i++;
+        break;
+      case 3:
+        result += mixed[3];
+        result += mixed[4];
+        i += 2;
+        break;
+    }
+  }
+  return result;
+}
+
+const randomData = generateRandom(1024);
+for (let i = 0; i < 10_000; i++) {
+  new Response(randomData);
+}
-- 
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